严重: Servlet.service() for servlet jsp threw exception
java.lang.OutOfMemoryError: Java heap space
at sun.nio.cs.StreamEncoder.write(StreamEncoder.java:114)
at java.io.OutputStreamWriter.write(OutputStreamWriter.java:203)
at org.apache.tomcat.util.buf.C2BConverter.convert(C2BConverter.java:87)
at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:457)
at org.apache.catalina.connector.CoyoteWriter.write(CoyoteWriter.java:162)
at org.apache.catalina.connector.CoyoteWriter.write(CoyoteWriter.java:171)
at org.phprpc.PHPRPC_Server.sendCallback(PHPRPC_Server.java:252)
at org.phprpc.PHPRPC_Server.sendError(PHPRPC_Server.java:282)
at org.phprpc.PHPRPC_Server.start(PHPRPC_Server.java:697)
at org.apache.jsp.emp_jsp._jspService(emp_jsp.java:61)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
at java.lang.Thread.run(Thread.java:619)
网上都在说修改 tomcat的文件。数据量大了，在改也没有用呀。。
有什么好的办法吗？？？？？？
如果你开的内存都到极限了，你还是仔细检查下你的程序吧，推荐使用JProfiler，如果你确定你的程序没问题，那只有最后一步就是升级硬件，不过一般都是程序的问题，所以先检查程序，看那个模块出现问题！
在一太内存大的机器上跑
之后将tomcat的内存设大点
windows 更改系统环境变量
加上JAVA_OPTS=-Xms64m -Xmx512m
Linux 在{tomcat_home}/bin/catalina.sh的前面，加
set JAVA_OPTS='-Xms64 -Xmx512'
试试看
按楼上的方法就可以，
windows也是改那个catalina.bat文件，搜一下JAVA_OPTS，加在它下一行就好了
要是安装版的tomcat，是没有catalina.bat文件的，要在那个控制程序里设置